Section Width485 mm (19.1")
Aspect Ratio56%
Rim Diameter12"
Overall Diameter848 mm (33.4")
Sidewall Height272 mm
Circumference2664 mm
485/56R12 — Buy Tires

Everything to know about the 485/56R12 tire size

Size geometry

A 485/56R12 tire has a 485mm section width and a 56% aspect ratio, mounted on a 12-inch rim. Sidewall height works out to 271.6mm (10.69") and overall outside diameter is 848.0mm (33.39"). At highway speed the tire completes about 375 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 485/56R12 is unavailable, the closest same-diameter substitutes on the same rim are 475/57R12 and 495/55R12. Both keep your speedometer reading within 1% — safe for daily use, ABS, and stability control. Always verify load and speed ratings before swapping.

Plus / minus sizing options

For a 485/56R12 you can upsize to 495/52R13 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 475/60R11 (minus-one) for a softer ride or winter setup. Both stay inside the Âą3% diameter tolerance that ABS and TPMS systems expect.

Vehicle compatibility

0 vehicles in our database run the 485/56R12 tire size from the factory. Aftermarket fitment depends on rim width, offset, and clearance — match these specs to your wheel before purchasing tires.

Vehicles Using 485/56R12

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